Diagnostic instrument



Nov. 3o 1926. 1,608,726

H. L.. DE ZENG DIAGNOSTIC INSTRUMENT v Filed July 19, 1922 2 Sheets-Skaai l O d ljlgff illy-5 2 @gf j? f '10 V NTOF ATTORNEYS.

Nov. 3o 1926. 1,608,726

H.L.DE ZENG DIAGNOSTIC INSTRUMENT Filed July 19, 1922 2 Sheets-Sheet 2 SIN" Patented Nov. 30, 1926.

ini-iran sri-ares PATENT orsi-cs.

HENRY L. DE ZEITG, F MOORESTOWN, NEW' JERSEY, LSSIGNOR TG DE ZEING COIVIPAIIY, OF CAMDEN, NEW JERSEY',V A :CGROBA'ON OF MEV-V JERSEY.

DIAGNOSTIC INSTRUMENT.

Application filed `July '19,

My invention relates to a neiv and improved form of diagnostic instrument for the eye, ear, nose, etc., wherein I employ one or more series of lenses situated on the observers side oi a central body plate hav ing a sight opening, the lenses in the series being adjustably mounted and adapted to register with the sight opening. Gn the opposite side of the body plate., I mount adjustably auxiliary lenses which are also adapted to function With the sight hole and which are carried in a rotatable disc or other movable member which latter' would be .mounted beneath the reflector.

By the employment of this construction, i am enabled to produce a diagnostic instrument of comparatively small size yet havinga very Wide range of lens foci, with a minimum separation between the eye of the observer and the face of the reflector, as is evident by referring to the drawings. It Will be seen that any oi the auxiliary lenses may be placed in optical alignment With the sight opening in the body plate Without passing beneath the lower e ige of the reiiector and that their adaptation to, or use with the instrument, in no Wise prevents the closest positioning` of the reiiector to the main body plate and the sight opening therein.

This construction, embodying one of the `toitures et my invention, enables me to make a diagnostic instrument having but one limited lens carrier on the operators side and one oit smaller capacity on the other side or' the main plate, `svith all of the lens foci required in an instrument of this lrin l, thereby producing a very thin and compact instrument with the reflector positioned extremely close to the body plate and to the sight opening therein, and in con.- sequence an instrument which oiTers an un- `neually iride angie of observation.

Another feature of my invention consists in a suitable opening in the central body plate through which lens indicators on the :iary lens carrier may be seenfrom the i s side of the instrument.

il, further object is to place lenses in the auxiliary lens carrier having the property of selectively retarding certain light rays. n further object is .to provide a single i 'use or `lens carrier having both :plus lenses of certain lfoci .se-

1922. Serial No. 576,129.

quence, and an v.fiuiriliary lens carrier on the opposite side of the main body plate, lilie- Wise having lenses of certain foci and arranged in particular sequence.

A iturthcr object is to devise an improved torni of mounting for the reiiector Wherein the auxiliary lenses .may pass across the sight opening in the body plate Without al .tecting the closest proximity of the refiector thereto.

.et further object is to devise a reector impervious to lio'ht and so stationed with respectto the sight opening in the central body plate that the object may be seen by looking past the periphery of the reflector.

A further object is to devise a novel mechanical arrangement 'for supporting the light passageway and the reflector upon the body portion of the instrument, a continuous piece oi' metal acting as holding means `for both.

Another novel feature of my invention is t-he adjustment of the light source With respect to the reflector whereby l am enabled to direct light rays oiE varying divergence or convergence through the. speculum and in this manner to increase or decrease the amount otl illumination of the object, when viewed through the speculum.

A further object oit my invention is to dcise a diagnostic instrument having a main body plate with sight opening, one or more series lenses adjustably mounted and adaptw ed to register With the sight opening and a speculum adapted to function with said sight opening so that the. eye, ear or nose may be examined with it. The speculum is preferably detachably connected with the other parts of the instrument.

When the speculum is attached, for an examination ot' the ear or nose, I am enablejd to .Kamine any object Which may be located at the end oi' the speculum or any distance beyond by reason of the adjustable. lens series which give 'the instrument any desired focal range, Whereas in all other ear or nose `eiramniing instruments only objects lying Within the tired focal range of the magnifying lens can be examined.

In using detachable specula of different `sizes' and shapes, my invention provides a single `diagnostic instrument Wit-h 'which an examination of the eye, ear ornose may be made .in contrast ivi/'ith the present employ.;

ment ot two or three separate and complete instruments tor accomplishing the same purpose.

My invention provides an instrument of eXtreme portability and simplicity, While at the same time covering a very Wide range of usefulness, the one instrument combining an ophthalmoscope, an otoseopeand a nasal scope.

lll/lith the above and other objects in view, all as will hereinafter appear, my invention comprehends a novel diagnostic instrument.

For the purpose ot illustrating my invention, l have shown in the accon'ipanying drawings a typical embodiment thereotI which is at present preferred by me, since this embodiment ivill be found in practice to give satisfactory and reliable results. It is, however, to be understood that the various instrumentalities ot which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization ot these instrume-ntalities as herein shown and described.

Figure 1 represents front elevation ot a diagnostic instrument, embodying my invention.

Figure 2 represents thereof.

Figure i3 represents a thereof.

Figure 4 representen section on line 1 -4 oi' Figure 1.

Figure represents a section on line 5-5 ot' Figure 1. y

Figure 6 represents a plan vieiv of the main lens carrier in detached position.

Figure 7 represents a plan view of the auxiliary lens carrier in detached position.

Figure 8 represents, in side elevation, a diagnostic instrument, embodying my invention, in conjunction with which a detachable speculum is employed.

Figure 9 represents a tace view ot Figure S.

Figure l0 represents. in side elevation, another embodiment ot my invention in which the speculum forms a permanent part ot the instrun'ient and is movable into operative and inoperative position.

Figure 11 represents a rear view ot the construction seen in Figure l0.

Figure l2 represents section on 12-12 oit Figure 10.

-igure 18 represents, iront elevation, another embodiment of my invention.

i ure 14 represents, in rear elevation,

a side elevation rear eleva tion line n another embodiment ot my invention.v

Figure 15 represents a section on line 15-15 ot Figure 1e. Figure 16 represents a fragmentary section ot an embodiment ot my invention using a different type of retlector. Figure 1'? represents a sectional vieiv ot another embodiment of my invention using a multiple condenser system.

Similar numerals ot' reference indicate corresponding parts.

, llli'eterring to the drawin s.

1 designates a diagnosticinstrument, embodying my invention. rlhe instrument is provided With a grasping handle 2 which serves as a container for source ot electric supply such as a storage battery, not shown, Which controls in the usual manner the lamp, not shown, which is contained Within the light tube 3. instead ot a storage battery the lamp can be connected with the usual lighting system, The light tube 3 has connected with it the reflector support t which is in the torni ot an angle, the lower portion ot which is connected to the light tube 3, While itsupper portiono carries a reflector 6.

7 designates the body portion ot the diagnostic instrument, which is lined in any desired manner with respect to the light tube 3, the reflector support 4 being preferably interposed between the body portion 7 and the light tube 3. The body portion 7 is illustrated in the form ot a plate which carries a main lens carrier S which is pivotally 'supported on a fastening device 9, and above the main lens carrier 8 is carried an auxiliary lens carrier 10, which is in the form of a disc pivotally supported at 11.

12 designates a cover plate which is retained in assembled position by means ot the 'fastening device 9. The cover plate 12 is provided with a sight opening 13 and in proximity to this sight opening is a reading aperture 1l, which, it desired, may be a continuation ot the sight opening 13. rl`he body portion 7 has secured to it one end ot a stop spring 15, which extends through the cover plate to engage a recess 16, in the lens carrier 8. in order to retain it in the position to which it has been adjusted and insure alignment nith the sight opening.

In a similar manner, the auxiliary lensI carrier 10 is retained in proper alignment by means of a stop spring 17, see Figure 4, which is carried by the body portion 7. The main lens carrier 8, see Figure 6, is provided With series ot lenses ot different poivers or strengths.

ris illustrated, the lens carrier 8 is provided with fifteen lenses 18, circumferentially disposed, an aperture 19. rl`he tace ot the lens carrier 8 is provided with the indent ni nbers 20 corresponding to the power or strength ot the dilterent lenses, and these index nu nbers are visible through the reading aperture 11i when the lens ot the corresponding power or strength is in alignment with the sight opening 13. ln a preferred torni ot my invention, the lenses included in the Vlens carrier comprise plus 1, 2, 3, et, 5, 6 and 7 and minus l 2, 3, s, 5,

unseen-'ee 6, 7 and 3 diopters, the plus numbersbeing customarily shown in White ligures, the

' rec. AThe body portion V7 is proi a sight opening 21 in alignment with the sit-lt opening 13. The auxiliary lens carrier `is provided with `lenses of different character which adapted to be brought into alignment with the sight openings and 13,

Referring now more particularly to Figure 7, the auxiliary lens carrier 10, as illustrated, is in `the form of a disc hav-ing mounted in it a plusl 16 diopt'er lens 22, a minus 1G diopter lens 23, a red-free color filter 9A and a Aday 'light color `filter The iary lens carrier 1() is also provided 'W1-nh an aperture The nuriliary len-s carrier 10 `is provided :with a -asping portion 27 of `any ydesired construe illustrated, it is in the form of a v In the er1-nb@Climent-seen in Figu i 3,"tl1e auxiliary lens carrier 10 has a niet. ied ufrrangenient .of the lenses, and a modified aetuating member, which can be actuated from the operators side of the diagnostic inst-rument, otherwise the construction is the same as that already described.

In the embodiment. seen in Figure 13, the same lenses as seen in Figure 7 are carried by the auxiliary lens carrier 10 but they are arranged only part Way around the circumference and the pin 27 extends through a slot 28 in the body portion 7.

In Figure lll, I have shown another embodiment of my invention in which the construction is similar to that already described, except that the body portion 7 is provided with the curved slots 29 through which exi tend the pins 30 which are carried by the auxiliary lens carrier 10, which in this embodiment, is mounted on the fastening device 9 so that the two lens carriers have a concentric movement.

It Will be apparent that, in this embodiment, the two lens carriers are mounted on the same side of the body portion instead of on opposite sides, as shown in Figures 1 to 3 inclusive.

It will be apparent that in this embodiment, seen in Figures 111 and 15, the auxl iliary lens carrier 10 can be actuated by means extending through the body portion.

Referring now to the embodiment seen in Figures 8 andV 9, I employ in conjunction with the constructions already described, a detachable speculum 31. This speculum is carried on a bracket 32 having portions adapted to,` enten-d into the bracket support 33,

Referring non*y to the embodiment seen in Figures 10, 11 and 12, I employ a` speculum, which is formed of the sections 34 and 35. Each section is loosely mounted on its respective shaft 36 carried by the body portion 7. The shafts 36 are carried by shaft supports 37, which in turn are carried by tie bod-y 44portion 7.

VEach speeulum Vis 4prmrided "with a sain `face 38 against which bears .a p`n 39 Intec to its shaft 36, a spring h/10 beh erposed bet-Ween a, 'shaft support 37 and Any type of reflector, such as (i, may be employed, forexample, in Figure 1.6, I have shown the reflector 1l-1 1'novi1ded with an aperture 42. A plate or shield i3 supported in any desired man-ner, orerhangs the upper portion of .the aperture 12 in vorder to prevent refiection of light from the upper edge :the retiector aperture into the eye of the operator.

It Will be understood that 'the lamp may or may not be adjustable with respect to the condensing lens 44, see Figs. 2, 3 and e. and in Fig. 17 I shovv a multiple condenser system which may be employed either with or Without the adjustable lamp feature, the preferred form having two lenses 44 and 15, as shown. This latter form enables me to increase the illumination by reason of the wider light grasping angle than would be possible to employ with a single condenser system.

The multiple condenser system also euables nie-to bring the anterior focal point of the illuminating rays very close to the rcllector Without appreciable loss of light. This is a distinct advantage as it materially reduces corneal rehenes when working at the near point.

The operation and manner of use of the diagnostic instrument will non be readily apparent to those skilled in this art, and is as follows The operator holds the instrument by means of the handle 2. so that the light from the lamp, not shown` Will be reflected from the reflector G into the eve of the patient, and on its return pass tl'n'ough the sight openings .21 and 13 to the eye of the operator. The main lens carrier 3 is rotated to any desired position. so that av lens of proper strength, for any particular case, may be brought into operative position ai, the sight opening just mentioned.

In case the range of lens values in the main lens carrier 8 is insutlicient to meet the requirements, one of the higher power lenses in the auxiliary lens carrier 10 is rotated into alignment with sight openings 21 and 13. Furt-herinore.v if an lamination is te be made using a character of light different from that resulting from. the use of the ordinary electric lamp, t-hen the auxiliary lens carrier 10 is rotated to such position that either the red-free color filter 24 or the day light color filter 25 is brought into operative alignment. Other' suitable color filters may be substituted for those mentioned.

1When an examination of the ear, nose or other body orifice is to be made, the speculuin 3l is brought into operative alignment, so that the observer' may look through the sight openings 13 and 2l and on down through the speculum to the body under observation.

lt will be apparent from the foregoing disclosure that, in accordance with my present invention, l accomplish all of the objects set forth in the statement of the invention. p It will now be apparent that I have devised a new and useful diagnostic instrument which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while l have, in the present instance, shown and described a preferred embodiment thereof which will give in practice satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modification in various particulars Without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described mv invention, what I claim as new and desire to secure by Letters Patent, is:

In a device of the character described, a light passage way, a reflector aligned with the light passage way, a divided speculum aligned with the reflector, means for moving the parts of the speculum out of alignment with the reflector, yieldingmeans allowing separation of the parts of the speculum but tending normally to hold them together, and a cam adapted to separate the parts of the speculum as it is moved out of alignment of the reiiector.

' HENRY L. DE ZENG. 

